How to add 'Usage' stats to iPod touch and iPad Settings.app

iPhone users have the ability to access usage stats via the Settings.app, which displays ‘Time since last full charge”, “Call Time”, ‘Cellular Network Data”, and “Tether Data”. Unfortunately, this is something that Apple has decided to leave out for iPod touch and iPad users. Luckily, there is a way for these users to add the setting, as long as their device is jailbroken.